PISTON GP 8N2533 - Caterpillar

Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00556758
Install fuel injection pump gear (8) on the engine.
Install bolts (7) on fuel injection pump gear (8).
Install nut (6) and the spring washer on fuel injection pump gear (8). Tighten the nut to a torque of 80 N m (59 lb ft).
Install idler gear hub (5) on the engine.
Illustration 2 g00556757
Use a suitable press to install new bushings (4) into idler gear (2).
Machine the bores for clearance on idler gear hub (5). The bore should have a clearance of 0.04 to 0.010 mm (0.0016 to 0.0039 inch) on idler gear hub (5). The bore can have a diameter of 57.14 to 57.18 mm (2.250 to 2.251 inch).
Machine the front faces of the bushings for the end play of idler gear (2). The gear and the bushings can have a thickness of 30.14 to 30.16 mm (1.186 to 1.187 inch).
Illustration 3 g00556563
Install idler gear (2) and retainer plate (3) on the engine. Note: Ensure that the timing marks on the camshaft gear, the crankshaft gear, and the idler gear are aligned.
Install bolts (1) on idler gear (2). Tighten the bolts to a torque of 44 N m (32 lb ft).
Check the end play of idler gear (2). Idler gear (2) should have end play of 0.10 to 0.20 mm (0.004 to 0.008 inch).
Check the backlash between the camshaft gear and idler gear (2). The gears must have a minimum backlash of 0.08 mm (0.003 inch). End By:
Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Install".